How do I convert an entire folder of PNGs to JPEGs?

Answer 1

If you don't have Photoshop, then download this program:

http://www.autoimager.com/

You can use it free for 15 days before purchasing.

Cave

Answer 2

Jpegs generally load the fastest of those 3 formats, but that is only because they can be compressed the most, and therefore suffering the most image quality.. Gifs come in second, and pngs third.

Answer 3

If you have access to a modern linux machine, this shell command would do it. I assume all png files end in '.png'.

$ for i in `ls -1 *.png | sed 's/\.png//'`; do pngtopnm $i.png | pnmtojpeg > $i.jpg; done;

If you're using Windows, search the web for 'batch graphics converter' -- there's lots of freeware out there to do this sort of thing.

Answer 4

If you have photoshop just open the png file in photoshop and resave it as Jpeg file.

Answer 5

easy just make sure you can see file extentions then select all the files and right click on one and go to rename, then rename it to something like:
1.jpg
and the rest of the files will follow
ex
1(1).jpg
1(2).jpg
1(3).jpg
1(4).jpg
1(5).jpg...

it does change the name but it is fast for changing the file extensions from png to jpg

Answer 6

Use a batch process routine in Fireworks or Photoshop

Answer 7

Get a trial version of ACDSee, you can convert file types, rename or resize any image type in batch.

Answer 8

Open it using Photoshop and re-save it in the new format.

Answer 9

Open each file and do a "save as" to .jpg.

Answer 10

Try using this handy extension changer


http://www.topshareware.com/Extension-Changer-download-17380.htm